I know that someone on here got a clear cam cover from Confederate a good while ago, maybe give them a ring.
http://confederate.com/I think it was kind of pricey though (~$700?)
I personally dont like the JAP rocker covers as its not a JAP, which makes it a bit odd.
Whilst the JAP rocker and inspection covers are beautifully made, like you I couldn't bring myself to fit them to a non-JAP engine.
Do like the see through timing belt cover though. Given the belt wear issues followed by spacer cooling mod it seems that an enterprising concern could make one completely out of see-through polycarbonate. Since the material has fire-retardent properties, engine heat shouldn't be a problem and suitable spacers or more sophisticated ducts allowing cooling without excessive dust/water ingress could be included in the moulding.
